package com.health;

import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;
import java.lang.reflect.Field;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Build;
import android.os.Environment;
import android.os.Looper;
import android.util.Log;
import android.view.Gravity;
import android.widget.Toast;

/**
 * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序,并记录发送错误报告.
 * 随诊方式----------
 * @author user
 * 
 */
public class CrashHandler implements UncaughtExceptionHandler {

	public static final String TAG = "CrashHandler";

	// 系统默认的UncaughtException处理类
	private Thread.UncaughtExceptionHandler mDefaultHandler;
	// CrashHandler实例
	private static CrashHandler INSTANCE = new CrashHandler();
	// 程序的Context对象
	private Context mContext;
	// 用来存储设备信息和异常信息
	private Map<String, String> infos = new HashMap<String, String>();

	// 用于格式化日期,作为日志文件名的一部分
	private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");

	/** 保证只有一个CrashHandler实例 */
	private CrashHandler() {
	}

	/** 获取CrashHandler实例 ,单例模式 */
	public static CrashHandler getInstance() {
		return INSTANCE;
	}

	/**
	 * 初始化
	 * 
	 * @param context
	 */
	public void init(Context context) {
		mContext = context;
		// 获取系统默认的UncaughtException处理器
		mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
		// 设置该CrashHandler为程序的默认处理器
		Thread.setDefaultUncaughtExceptionHandler(this);
	}

	/**
	 * 当UncaughtException发生时会转入该函数来处理
	 */
	@Override
	public void uncaughtException(Thread thread, Throwable ex) {
		ex.printStackTrace();
		if (!handleException(ex) && mDefaultHandler != null) {
			// 如果用户没有处理则让系统默认的异常处理器来处理
			mDefaultHandler.uncaughtException(thread, ex);
		} else {
//			Intent intent = mContext.getPackageManager()
//					.getLaunchIntentForPackage(mContext.getPackageName());
//			PendingIntent restartIntent = PendingIntent.getActivity(mContext.getApplicationContext(), 0, intent,
//					PendingIntent.FLAG_ONE_SHOT);
//			AlarmManager mgr = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);
//			mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 3000, restartIntent); // 1秒钟后重启应用
			try {
				Thread.sleep(3500);
			} catch (InterruptedException e) {
				Log.e(TAG, "error : ", e);
			}

			// 退出程序
			android.os.Process.killProcess(android.os.Process.myPid());
			System.exit(1);
		}
	}

	/**
	 * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.
	 * 
	 * @param ex
	 * @return true:如果处理了该异常信息;否则返回false.
	 */
	private boolean handleException(final Throwable ex) {
		if (ex == null) {
			return false;
		}
		// 使用Toast来显示异常信息
		new Thread() {
			@Override
			public void run() {
				Looper.prepare();
				// Toast.makeText(mContext, "很抱歉,程序出现异常,即将退出.",
				// Toast.LENGTH_LONG).show();
				if (ex.getMessage().contains("BtReaderClient")) {
					System.out.println("提示异常");
					Toast toast = Toast.makeText(mContext, "请先将身份证读卡器打开，再启动程序.", Toast.LENGTH_LONG);
					// MyToast toast = MyToast.makeText(mContext, null, 5000);
					// toast.setView();
					toast.setGravity(Gravity.CENTER, 0, 0);

					// toast.setGravity(Gravity.CENTER, 0, 0);
					toast.show();
					// .show();

				}
				System.out.println(ex.getMessage());
				// Error receiving broadcast Intent {
				// act=android.bluetooth.device.action.ACL_CONNECTED
				// flg=0x4000010 (has extras) } in
				// com.sdses.BtReaderClient$1@4200a740
				Looper.loop();
			}
		}.start();
//		 收集设备参数信息
		 collectDeviceInfo(mContext);
//		 保存日志文件
		 saveCrashInfo2File(ex);
		return true;
	}

	/**
	 * 收集设备参数信息
	 * 
	 * @param ctx
	 */
	public void collectDeviceInfo(Context ctx) {
		try {
			PackageManager pm = ctx.getPackageManager();
			PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);
			if (pi != null) {
				String versionName = pi.versionName == null ? "null" : pi.versionName;
				String versionCode = pi.versionCode + "";
				infos.put("versionName", versionName);
				infos.put("versionCode", versionCode);
			}
		} catch (NameNotFoundException e) {
			Log.e(TAG, "an error occured when collect package info", e);
		}
		Field[] fields = Build.class.getDeclaredFields();
		for (Field field : fields) {
			try {
				field.setAccessible(true);
				infos.put(field.getName(), field.get(null).toString());
				Log.d(TAG, field.getName() + " : " + field.get(null));
			} catch (Exception e) {
				Log.e(TAG, "an error occured when collect crash info", e);
			}
		}
	}

	 /**
	 * 保存错误信息到文件中
	 *
	 * @param ex
	 * @return 返回文件名称,便于将文件传送到服务器
	 */
	 private String saveCrashInfo2File(Throwable ex) {
	
	 StringBuffer sb = new StringBuffer();
	 for (Map.Entry<String, String> entry : infos.entrySet()) {
	 String key = entry.getKey();
	 String value = entry.getValue();
	 sb.append(key + "=" + value + "\n");
	 }
	
	 Writer writer = new StringWriter();
	 PrintWriter printWriter = new PrintWriter(writer);
	 ex.printStackTrace(printWriter);
	 Throwable cause = ex.getCause();
	 while (cause != null) {
	 cause.printStackTrace(printWriter);
	 cause = cause.getCause();
	 }
	 printWriter.close();
	 String result = writer.toString();
	 sb.append(result);
	 try {
	 long timestamp = System.currentTimeMillis();
	 String time = formatter.format(new Date());
	 String fileName = "crash-" + time + "-" + timestamp + ".log";
	 if
	 (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
	 {
	 String path = "/sdcard/crash/";
	 File dir = new File(path);
	 if (!dir.exists()) {
	 dir.mkdirs();
	 }
	 FileOutputStream fos = new FileOutputStream(path + fileName);
	 fos.write(sb.toString().getBytes());
	 fos.close();
	 }
	 return fileName;
	 } catch (Exception e) {
	 Log.e(TAG, "an error occured while writing file...", e);
	 }
	 return null;
	 }
}